Oh absolutely keep it ! It is gorgeous. And especially since you say you will get a lot of wear out of it! If you would not, then I would say return it. I am drooling just looking at the pictures.
It must be TDF in person.
I love it! I know how you feel Perja...sometimes I hesitate on something I buy afterwards. The hesitation is not because I don't want it, but that I should have saved my $, spent it differently or something. You to justify your purchase to yourself and you will feel better. Maybe don't buy anything for a while and keep the scarf.